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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
r"""
Default AMP
=========
Monitor a process by executing a command line. This is the default AMP's behavior
if no AMP script is found.
Configuration file example
--------------------------
[amp_foo]
enable=true
regex=\/usr\/bin\/foo
refresh=10
one_line=false
command=foo status
"""
from subprocess import check_output, STDOUT, CalledProcessError
from glances.compat import u, to_ascii
from glances.logger import logger
from glances.amps.glances_amp import GlancesAmp
class Amp(GlancesAmp):
"""Glances' Default AMP."""
NAME = ''
VERSION = '1.1'
DESCRIPTION = ''
AUTHOR = 'Nicolargo'
EMAIL = 'contact@nicolargo.com'
def __init__(self, name=None, args=None):
"""Init the AMP."""
self.NAME = name.capitalize()
super(Amp, self).__init__(name=name, args=args)
def update(self, process_list):
"""Update the AMP"""
# Get the systemctl status
logger.debug('{}: Update AMP stats using command {}'.format(self.NAME, self.get('service_cmd')))
# Get command to execute
try:
res = self.get('command')
except OSError as e:
logger.debug('{}: Error while executing command ({})'.format(self.NAME, e))
return self.result()
# No command found, use default message
if res is None:
# Set the default message if command return None
# Default sum of CPU and MEM for the matching regex
self.set_result(
'CPU: {:.1f}% | MEM: {:.1f}%'.format(
sum([p['cpu_percent'] for p in process_list]), sum([p['memory_percent'] for p in process_list])
)
)
return self.result()
# Run command(s)
# Comma separated commands can be executed
try:
msg = ''
for cmd in res.split(';'):
msg += u(check_output(cmd.split(), stderr=STDOUT))
self.set_result(to_ascii(msg.rstrip()))
except CalledProcessError as e:
self.set_result(e.output)
return self.result()